Displaying publications 81 - 100 of 3194 in total

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  1. Synergistic Antimicrobial Effect of a Seaweed-Probiotic Blend Against Acute Hepatopancreatic Necrosis Disease (AHPND)-Causing Vibrio parahaemolyticus
    Lim SY, Loo KW, Wong WL
    Probiotics Antimicrob Proteins, 2020 09;12(3):906-917.
    PMID: 31773414 DOI: 10.1007/s12602-019-09616-8
    The outbreak of acute hepatopancreatic necrosis disease (AHPND) has caused great economic losses to the shrimp culture sector. However, the use of antibiotics to fight this disease has resulted in negative impacts on human health and the environment. Thus, the use of natural alternatives to antibiotics may be a better solution. In this study, four Bacillus species obtained from the guts of shrimps (Fenneropenaeus penicillatus and Penaeus monodon) showed antimicrobial activity against the AHPND-causing Vibrio parahaemolyticus strain 3HP using the cross-streaking and agar spot methods. Two of the Bacillus isolates, B2 and BT, also showed good probiotic properties, exhibiting tolerance to bile, good adhesion to shrimp mucus, non-hemolytic, susceptibility to antibiotics and being safe towards hosts. Moreover, a seaweed-probiotic blend (a combination of Bacillus B2 and 20 mg/ml of the red seaweed Gracilaria sp.) exhibited synergistic in vitro inhibition against V. parahaemolyticus strain 3HP, with an observed inhibition zone of 5.0 mm. The broth co-culture experiment results further indicated that the seaweed-probiotic blend inhibited V. parahaemolyticus through competitive exclusion. The in vivo challenge trials also confirmed that this seaweed-probiotic blend significantly reduced the mortality of shrimps post-challenge with the AHPND-causing V. parahaemolyticus strain 3HP (p < 0.05) compared to the negative control (mortality rate = 13.88% vs 72.19%). Thus, this seaweed-probiotic blend may serve as an alternative to antibiotics in controlling the outbreak of AHPND.
    Matched MeSH terms: Seaweed/microbiology; Seafood/microbiology*; Decapoda (Crustacea)/microbiology*
  2. Adult-onset nasopharyngeal diphtheria: an uncommon but rapidly progressive and potentially fatal infection
    Ding CH, Wahab AA, Marina Z, Leong CL, Umur N, Wong PF
    Trop Biomed, 2021 Jun 01;38(2):119-121.
    PMID: 34172699 DOI: 10.47665/tb.38.2.045
    Nasopharyngeal diphtheria is an acute infectious upper respiratory tract disease caused by toxigenic strains of Corynebacterium diphtheriae. We report a case of a young adult who presented to us with a short history of fever, sore throat, hoarseness of voice and neck swelling. He claimed to have received all his childhood vaccinations and had no known medical illnesses. During laryngoscopy, a white slough (or membrane) was seen at the base of his tongue. The epiglottis was also bulky and the arytenoids were swollen bilaterally. The membrane was sent to the microbiology laboratory for culture. A diagnosis of nasopharyngeal diphtheria was made clinically and the patient was treated with an antitoxin together with erythromycin, while awaiting the culture result. Nevertheless, the patient's condition deteriorated swiftly and although the laboratory eventually confirmed an infection by toxin-producing C. diphtheriae, the patient had already succumbed to the infection.
    Matched MeSH terms: Fever/microbiology; Hoarseness/microbiology; Pharyngitis/microbiology
  3. Fulltext Contaminated milk is a common cause of necrotising enterocolitis: A hypothesis
    Boo NY
    Malays J Pathol, 2016 Dec;38(3):223-227.
    PMID: 28028291 MyJurnal
    Necrotising enterocolitis (NEC) is the most commonly acquired gastrointestinal disease of neonates, particularly the very preterm (gestation <32 weeks) and/or very low birth weight (<1500g). It is associated with high morbidity and mortality. Despite improvement in neonatal care and increased use of expressed breast milk (EBM), the incidence remains high in many neonatal intensive care units (NICU), and even shows increasing trend in some countries. Numerous studies have pointed to the infective nature of NEC. Some investigators have reported an increase in the incidence of NEC in their NICU when the percentage of infants with pathogens isolated from their gut increased, and decreased when gut colonisation rate was low. Both bacteria and viruses have been reported to be associated with outbreaks of NEC. The majority (>90%) of the NEC cases occurred in neonates on enteral feeding. Studies have shown that milk (whether EBM or formula) fed to neonates was not sterile and were further contaminated during collection, transport, storage and/or feeding. Other investigators have reported a reduction in the incidence of NEC when they improved infection control measures and hygienic procedures in handling milk. It is, therefore, hypothesised that the most common cause of NEC is due to the feeding of neonates, particularly the vulnerable very preterm small neonates, with milk heavily contaminated during collection at source, transport, storage and/or feeding. Because of the immaturity of the immune system of the neonates, excessive inflammatory response to the pathogen load in the gut leads to the pathogenesis of NEC.
    Matched MeSH terms: Milk, Human/microbiology*; Enterocolitis, Necrotizing/microbiology*; Infant Formula/microbiology*
  4. Fulltext Non-O1 Vibrio cholerae septicaemia: a case report
    Tan KK, Sin KS, Ng AJ, Yahya H, Kaur P
    Singapore Med J, 1994 Dec;35(6):648-9.
    PMID: 7761898
    Non-O1 vibrio cholerae infections are associated with sporadic cases of gastroenteritis and extraintestinal infections. Septicaemia due to non-O1 vibrio cholerae is rare and are mainly reported in adults, particularly in immunocompromised patients. We report a case of non-O1 vibrio cholerae septicaemia and gastroenteritis in an 8-year-old child. The patient presented with bloody diarrhoea, fever and severe dehydration. Non-O1 vibrio cholerae were isolated from blood and stool cultures. The clinical course was uneventful after starting appropriate rehydration and supportive therapy.
    Matched MeSH terms: Cholera/microbiology*; Gastroenteritis/microbiology*; Bacteremia/microbiology*
  5. Rapid detection and E-test antimicrobial susceptibility testing of Vibrio parahaemolyticus isolated from seafood and environmental sources in Malaysia
    Al-Othrubi SM, Hanafiah A, Radu S, Neoh H, Jamal R
    Saudi Med J, 2011 Apr;32(4):400-6.
    PMID: 21484001
    To find out the prevalence and antimicrobial susceptibility of Vibrio parahaemolyticus in seafoods and environmental sources.
    Matched MeSH terms: Water Microbiology*; Seafood/microbiology*
  6. Fulltext Fermentation Quality and Additives: A Case of Rice Straw Silage
    Oladosu Y, Rafii MY, Abdullah N, Magaji U, Hussin G, Ramli A, et al.
    Biomed Res Int, 2016;2016:7985167.
    PMID: 27429981 DOI: 10.1155/2016/7985167
    Rice cultivation generates large amount of crop residues of which only 20% are utilized for industrial and domestic purposes. In most developing countries especially southeast Asia, rice straw is used as part of feeding ingredients for the ruminants. However, due to its low protein content and high level of lignin and silica, there is limitation to its digestibility and nutritional value. To utilize this crop residue judiciously, there is a need for improvement of its nutritive value to promote its utilization through ensiling. Understanding the fundamental principle of ensiling is a prerequisite for successful silage product. Prominent factors influencing quality of silage product include water soluble carbohydrates, natural microbial population, and harvesting conditions of the forage. Additives are used to control the fermentation processes to enhance nutrient recovery and improve silage stability. This review emphasizes some practical aspects of silage processing and the use of additives for improvement of fermentation quality of rice straw.
    Matched MeSH terms: Oryza/microbiology*; Silage/microbiology*; Plant Stems/microbiology*
  7. Heat inactivation of hepatitis A virus in dairy foods
    Bidawid S, Farber JM, Sattar SA, Hayward S
    J Food Prot, 2000 Apr;63(4):522-8.
    PMID: 10772219
    Experiments were performed to determine the thermal resistance of hepatitis A virus (HAV) in three types of dairy products containing increased amounts of fat content (skim milk, homogenized milk; 3.5% MFG, and table cream; 18% MFG). HAV-inoculated dairy products were introduced into custom-made U-shaped microcapillary tubes that in turn were simultaneously immersed in a waterbath, using custom-made floating boats and a carrying platform. Following exposure to the desired time and temperature combinations, the contents of each of the tubes was retrieved and was tested by plaque assay to determine the reduction in virus titer. Our data indicated that < 0.5 min at 85 degrees C was sufficient to cause a 5-log reduction in HAV titer in all three dairy products, whereas at 80 degrees C, < or = 0.68 min (for skim and homogenized milk), and 1.24 min (for cream) were needed to cause a similar log reduction. Using a nonlinear two-phase negative exponential model (two-compartment model) to analyze the data, it was found that at temperatures of 65, 67, 69, 71, and 75 degrees C, significantly (P < 0.05) higher exposure times were needed to achieve a 1-log reduction in virus titer in cream, as compared to skim and homogenized milk. For example, at 71 degrees C, a significantly (P < 0.05) higher exposure time of 0.52 min (for cream) was needed as compared to < or = 0.18 min (for skim and homogenized milk) to achieve a 1-log reduction in virus titer. A similar trend of inactivation was observed at 73 and 75 degrees C where significantly (P < 0.05) higher exposure times of 0.29 to 0.36 min for cream were needed to cause a 1-log reduction in HAV in cream, as compared to < or = 0.17 min for skim and homogenized milk. This study has provided information on the heat resistance of HAV in skim milk, homogenized milk, and table cream and demonstrated that an increase in fat content appears to play a protective role and contributes to the heat stability of HAV.
    Matched MeSH terms: Dairy Products/microbiology*; Food Microbiology*
  8. Fulltext Does Campylobacter jejuni form biofilms in food-related environments?
    Teh AH, Lee SM, Dykes GA
    Appl Environ Microbiol, 2014 Sep;80(17):5154-60.
    PMID: 24928882 DOI: 10.1128/AEM.01493-14
    Campylobacter jejuni is one of the most frequent causes of bacterial gastrointestinal food-borne infection worldwide. This species is part of the normal flora of the gastrointestinal tracts of animals used for food production, including poultry, which is regarded as the primary source of human Campylobacter infections. The survival and persistence of C. jejuni in food processing environments, especially in poultry processing plants, represent significant risk factors that contribute to the spread of this pathogen through the food chain. Compared to other food-borne pathogens, C. jejuni is more fastidious in its growth requirements and is very susceptible to various environmental stressors. Biofilm formation is suggested to play a significant role in the survival of C. jejuni in the food production and processing environment. The aims of this minireview were (i) to examine the evidence that C. jejuni forms biofilms and (ii) to establish the extent to which reported and largely laboratory-based studies of C. jejuni biofilms provide evidence for biofilm formation by this pathogen in food processing environments. Overall existing studies do not provide strong evidence for biofilm formation (as usually defined) by most C. jejuni strains in food-related environments under the combined conditions of atmosphere, temperature, and shear that they are likely to encounter. Simple attachment to and survival on surfaces and in existing biofilms of other species are far more likely to contribute to C. jejuni survival in food-related environments based on our current understanding of this species.
    Matched MeSH terms: Environmental Microbiology*; Food Microbiology*
  9. Rapid and sensitive detection of Salmonella in agro-Food and environmental samples: A review of advances in rapid tests and biosensors
    Oslan SNH, Yusof NY, Lim SJ, Ahmad NH
    J Microbiol Methods, 2024 Apr;219:106897.
    PMID: 38342249 DOI: 10.1016/j.mimet.2024.106897
    Salmonella is as an intracellular bacterium, causing many human fatalities when the host-specific serotypes reach the host gastrointestinal tract. Nontyphoidal Salmonella are responsible for numerous foodborne outbreaks and product recalls worldwide whereas typhoidal Salmonella are responsible for Typhoid fever cases in developing countries. Yet, Salmonella-related foodborne disease outbreaks through its food and water contaminations have urged the advancement of rapid and sensitive Salmonella-detecting methods for public health protection. While conventional detection methods are time-consuming and ineffective for monitoring foodstuffs with short shelf lives, advances in microbiology, molecular biology and biosensor methods have hastened the detection. Here, the review discusses Salmonella pathogenic mechanisms and its detection technology advancements (fundamental concepts, features, implementations, efficiency, benefits, limitations and prospects). The time-efficiency of each rapid test method is discussed in relation to their limit of detections (LODs) and time required from sample enrichment to final data analysis. Importantly, the matrix effects (LODs and sample enrichments) were compared within the methods to potentially speculate Salmonella detection from environmental, clinical or food matrices using certain techniques. Although biotechnological advancements have led to various time-efficient Salmonella-detecting techniques, one should consider the usage of sophisticated equipment to run the analysis by moderately to highly trained personnel. Ultimately, a fast, accurate Salmonella screening that is readily executed by untrained personnels from various matrices, is desired for public health procurement.
    Matched MeSH terms: Food Microbiology
  10. Comparative analysis of root associated microbes in tropical cultivated and weedy rice (Oryza spp.) and temperate cultivated rice
    Juliyanti V, Itakura R, Kotani K, Lim SY, Suzuki G, Chong CW, et al.
    Sci Rep, 2024 Apr 26;14(1):9656.
    PMID: 38671238 DOI: 10.1038/s41598-024-60384-0
    Weedy rice is a major problem in paddy fields around the world. It is well known that weedy rice appears to grow faster and mature earlier than cultivated rice. It is possible that differences in the root microbial genetics are correlated with this characteristic. This study incorporated 16S rRNA amplicon sequencing to study the microbial composition in the rhizosphere and endosphere of rice root. No significant difference was found between the microbiota associated with weedy and cultivated rice lines grown in the same field. It was found that the endosphere had less microbial diversity compared to the rhizosphere. The major groups of bacteria found in the endosphere are from the phylum Proteobacteria, Myxococcota, Chloroflexota, and Actinobacteria. In addition, by analyzing the microbiome of japonica rice grown in the field in a temperate climate, we found that despite differences in genotype and location, some bacterial taxa were found to be common and these members of the putative rice core microbiome can also be detected by in situ hybridization. The delineation of a core microbiome in the endosphere of rice suggests that these bacterial taxa might be important in the life cycle of a wide range of rice types.
    Matched MeSH terms: Soil Microbiology*; Plant Weeds/microbiology
  11. Fulltext Cervical abscesses due to co-infection with Burkholderia pseudomallei, Salmonella enterica serovar Stanley and Mycobacterium tuberculosis in a patient with diabetes mellitus
    Sulaiman H, Ponnampalavanar S, Mun KS, Italiano CM
    BMC Infect Dis, 2013 Nov 09;13:527.
    PMID: 24209898 DOI: 10.1186/1471-2334-13-527
    BACKGROUND: Infections due to Mycobacterium tuberculosis, Burkholderia pseudomallei and non-typhoidal Salmonella cause significant morbidity and mortality throughout the world. These intracellular pathogens share some common predisposing factors and clinical features. Co-infection with two of these organisms has been reported previously but, to our knowledge, this is the first time that infection with all three has been reported in one person.

    CASE PRESENTATION: In September 2010, a 58-year-old diabetic Malaysian male presented with fever and a fluctuant mass on the right side of his neck. B. pseudomallei was isolated from an aspirate of this lesion and there was radiological evidence of disseminated infection in the liver and spleen. The recurrence of clinical symptoms over ensuing months prompted further aspiration and biopsy of a cervical abscess and underlying lymph nodes. Salmonella enterica serovar Stanley and then M. tuberculosis were identified from these specimens by culture and molecular methods. The patient responded to targeted medical management of each of these infections.

    CONCLUSION: In endemic settings, a high index of suspicion and adequate tissue sampling are imperative in identifying these pathogenic organisms. Diabetes was identified as a predisposing factor in this case while our understanding of other potential risk factors is evolving.

    Matched MeSH terms: Abscess/microbiology; Melioidosis/microbiology*; Neck/microbiology; Salmonella Infections/microbiology*; Tuberculosis/microbiology*; Diabetes Complications/microbiology*; Coinfection/microbiology
  12. Fulltext The association of Streptococcus bovis/gallolyticus with colorectal tumors: the nature and the underlying mechanisms of its etiological role
    Abdulamir AS, Hafidh RR, Abu Bakar F
    J Exp Clin Cancer Res, 2011;30:11.
    PMID: 21247505 DOI: 10.1186/1756-9966-30-11
    Streptococcus bovis (S. bovis) bacteria are associated with colorectal cancer and adenoma. S. bovis is currently named S. gallolyticus. 25 to 80% of patients with S. bovis/gallolyticus bacteremia have concomitant colorectal tumors. Colonic neoplasia may arise years after the presentation of bacteremia or infectious endocarditis of S. bovis/gallolyticus. The presence of S. bovis/gallolyticus bacteremia and/or endocarditis is also related to the presence of villous or tubular-villous adenomas in the large intestine. In addition, serological relationship of S. gallolyticus with colorectal tumors and direct colonization of S. gallolyticus in tissues of colorectal tumors were found. However, this association is still under controversy and has long been underestimated. Moreover, the etiological versus non-etiological nature of this associationis not settled yet. Therefore, by covering the most of up to date studies, this review attempts to clarify the nature and the core of S. bovis/gallolyicus association with colorectal tumors and analyze the possible underlying mechanisms.
    Matched MeSH terms: Adenoma/microbiology; Endocarditis/microbiology; Intestinal Mucosa/microbiology; Precancerous Conditions/microbiology; Colorectal Neoplasms/microbiology; Bacteremia/microbiology; Gastrointestinal Tract/microbiology*
  13. Settling behaviour of aerobic granular sludge
    Nor Anuar A, Ujang Z, van Loosdrecht MC, de Kreuk MK
    Water Sci Technol, 2007;56(7):55-63.
    PMID: 17951868
    Aerobic granular sludge (AGS) technology has been extensively studied recently to improve sludge settling and behaviour in activated sludge systems. The main advantage is that aerobic granular sludge (AGS) can settle very fast in a reactor or clarifier because AGS is compact and has strong structure. It also has good settleability and a high capacity for biomass retention. Several experimental works have been conducted in this study to observe the settling behaviours of AGS. The study thus has two aims: (1) to compare the settling profile of AGS with other sludge flocs and (2) to observe the influence of mechanical mixing and design of the reactor to the settleability of AGS. The first experimental outcome shows that AGS settles after less than 5 min in a depth of 0.4 m compared to other sludge flocs (from sequencing batch reactor, conventional activated sludge and extended aeration) which takes more than 30 min. This study also shows that the turbulence from the mixing mechanism and shear in the reactor provides an insignificant effect on the AGS settling velocity.
    Matched MeSH terms: Sewage/microbiology*
  14. Bloodstream infection in children
    See LL
    Pediatr Crit Care Med, 2005 May;6(3 Suppl):S42-4.
    PMID: 15857557
    To establish the definitions of bloodstream infection (BSI) in children for the purposes of identifying BSI for early therapy, enrollment in sepsis trials, and epidemiology and surveillance studies.
    Matched MeSH terms: Sepsis/microbiology*
  15. Fulltext Chronic osteomyelitis due to Burkholderia pseudomallei
    Kareem BA, Aiyar S, Marshal DS
    Med J Malaysia, 1995 Mar;50(1):116.
    PMID: 7752966
    Matched MeSH terms: Osteomyelitis/microbiology*
  16. Prevalence of Listeria monocytogenes in foods in Malaysia
    Arumugaswamy RK, Ali GR, Abd Hamid SN
    Int J Food Microbiol, 1994 Sep;23(1):117-21.
    PMID: 7811569
    A total of 234 samples of food, consisting of 158 of raw and 76 samples of ready-to-eat food were examined for the presence of Listeria monocytogenes. The frequencies of L. monocytogenes contamination in raw foods were: chicken portions (60%), liver (60%) and gizzard (62%), beef (50%), beansprout (85%), prawns (44%), kupang (dried oysters) (33%), bean cake (25%), satay (48%) and leafy vegetables (22%). Of the ready-to-eat foods: satay (26%), prawns, squids, clams and chicken dishes (22%), cucumber (80%) and peanut sauce (20%) were found to yield L. monocytogenes.
    Matched MeSH terms: Food Microbiology*
  17. Fulltext A microbiological study of genital ulcers in Kuala Lumpur
    Zainah S, Cheong YM, Sinniah M, Gan AT, Akbal K
    Med J Malaysia, 1991 Sep;46(3):274-82.
    PMID: 1839925
    The microbial aetiology of genital ulcers was studied in 249 patients (241 men and 8 women) attending a Sexually Transmitted Disease Clinic in Kuala Lumpur, Malaysia. Herpes simplex virus type 2 was isolated in 48 (19.2%) patients, Haemophilus ducreyi from 22 (8.8%), Neisseria gonorrhoeae from seven (2.8%) and Chlamydia trachomatis from four (1.6%). Syphilis was diagnosed in 18 (7.2%) patients on the basis of dark field microscopy. Two (0.8%) patients were found to have both chancroid and syphilis and one (0.5%) had both gonorrhoea and syphilis. No organism was isolated in the remaining 151 (61.5%) patients. Overall, the accuracy of clinical diagnosis was 58% for single infection, 67% for herpes, 63% for syphilis, 47% for chancroid and 0% for lymphogranuloma venereum. Therefore, our study confirms the need for laboratory tests to diagnose accurately the aetiology of genital ulcer disease.
    Matched MeSH terms: Chlamydia Infections/microbiology; Genital Diseases, Female/microbiology*; Genital Diseases, Male/microbiology*; Gonorrhea/microbiology; Haemophilus Infections/microbiology; Herpes Genitalis/microbiology; Ulcer/microbiology
  18. Fulltext The applicability of Cary Blair medium as a sole transport medium for the recovery of enteropathogens in the Malaysian context
    Jegathesan M, Paramasivam T
    Med J Malaysia, 1981 Jun;36(2):108-11.
    PMID: 7343818
    The efficacy of Cary Blair medium was compared with that of Selenite 'F'in the isolation of enteropathogens from 805 cases of diarrhoea. It was shown that use of the Cary Blair medium resulted in a significantly higher rate of isolation. Not only were organisms found which were not isolated from the Selenite 'F' but there was a much higher isolation rate of Salmonella from Cary Blair medium althougn Selenite 'F' is generally considered as an enrichment medium for
    Salmonella. The findings indicate that it would be advantageous to introduce Cary Blair medium as the sole transport medium for the isolation of enteropathogensfrom cases ofdiarrhoea.
    Matched MeSH terms: Diarrhea/microbiology
  19. Environmental control of Vibrio spp. abundance and community structure in tropical waters
    Wong YY, Lee CW, Bong CW, Lim JH, Narayanan K, Sim EUH
    FEMS Microbiol Ecol, 2019 11 01;95(11).
    PMID: 31688899 DOI: 10.1093/femsec/fiz176
    We measured Vibrio spp. distribution and community profile in the tropical estuary of Port Klang and coastal water of Port Dickson, Malaysia. Vibrio spp. abundance ranged from 15 to 2395 colony forming units mL-1, and was driven by salinity and chlorophyll a (Chl a) concentration. However, the effect of salinity was pronounced only when salinity was <20 ppt. A total of 27 Vibrio spp. were identified, and theVibrio spp. community at Port Dickson was more diverse (H' = 1.94 ± 0.21). However species composition between Port Dickson and Port Klang were similar. Two frequently occurring Vibrio spp. were V. owensii and V. rotiferianus, which exhibited relatively higher growth rates (ANCOVA: F > 4.338, P < 0.05). Co-culture experiments between fast- and slow-growing Vibrio spp. revealed that fast-growing Vibrio spp. (r-strategists) were overwhelmed by slower-growing Vibrio spp. (K-strategists) when nutrient conditions were set towards oligotrophy. In response to resource availability, the intrinsic growth strategy of each Vibrio spp. determined its occurrence and the development of Vibrio spp. community composition.
    Matched MeSH terms: Environmental Microbiology*
  20. Fulltext Dynamic microbiome evolution in social bees
    Kwong WK, Medina LA, Koch H, Sing KW, Soh EJY, Ascher JS, et al.
    Sci Adv, 2017 Mar;3(3):e1600513.
    PMID: 28435856 DOI: 10.1126/sciadv.1600513
    The highly social (eusocial) corbiculate bees, comprising the honey bees, bumble bees, and stingless bees, are ubiquitous insect pollinators that fulfill critical roles in ecosystem services and human agriculture. Here, we conduct wide sampling across the phylogeny of these corbiculate bees and reveal a dynamic evolutionary history behind their microbiota, marked by multiple gains and losses of gut associates, the presence of generalist as well as host-specific strains, and patterns of diversification driven, in part, by host ecology (for example, colony size). Across four continents, we found that different host species have distinct gut communities, largely independent of geography or sympatry. Nonetheless, their microbiota has a shared heritage: The emergence of the eusocial corbiculate bees from solitary ancestors appears to coincide with the acquisition of five core gut bacterial lineages, supporting the hypothesis that host sociality facilitates the development and maintenance of specialized microbiomes.
    Matched MeSH terms: Bees/microbiology*
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